hit-testing needs to walk in backwards order from paint.
The previous attempt at reverse sorting by z-index didn't
reverse things with the same z-index. Instead, forward
sort the same way as we do with paint and then reverse
the whole vector.

R=abarth@chromium.org, eseidel@chromium.org

Review URL: https://codereview.chromium.org/986793002

TBR=sky

Review URL: https://codereview.chromium.org/981143005

This can occur, for instance, if a child component runs before a parent component within a single animation frame, and the child does setState() while the parent removes it. The child will already have been entered into the rendering queue.

TBR=eseidel
BUG=

Review URL: https://codereview.chromium.org/983793004

TBR=abarth
BUG=

Review URL: https://codereview.chromium.org/984983004

Sorry I keep changing my mind about this. My thinking had been since this was computable by just setting a bit and checking it in render(), that it was silly, but I keep finding uses for it and it's annoying to re-implement in each component.

TBR=eseidel
BUG=

Review URL: https://codereview.chromium.org/986753002

TBR=eseidel
BUG=

Review URL: https://codereview.chromium.org/987833002

This patch changes the timing of the unmount call until after the component is removed (and marked as such) and allows setState to be called after this point. If this happens, setState will still invoke the closer to do any neccesary cleanup, but doesn't schedule the component for render

R=eseidel@chromium.org, eseidel
BUG=

Review URL: https://codereview.chromium.org/985853002

In production I added an early return.  I don't bother to log
in production since no one is looking at the log anyway.

Unfortunately this currently only fires when using a debug build
we should fix our Release build to have a checked-mode option
or consider hacks like having all localhost urls enable checked
mode, etc.

R=ianh@google.com, rafaelw@chromium.org
BUG=

Review URL: https://codereview.chromium.org/983973005

TBR=eseidel
BUG=

Review URL: https://codereview.chromium.org/983173003

This provokes a rendering bug in MojoShell but not in SkyShell.

R=eseidel@chromium.org

Review URL: https://codereview.chromium.org/984793002

To test:
sky/tools/shelldb analyze sky/examples/stocks-fn/stocksapp.dart

It prints 600+ warnings about the "native" keyword, and after
this change only a couple warnings about missing library names
which I don't fully understand.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/987613002

It show 600+ "native" warnings, but those can be ignored
for now.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/981103002

fix typo in _syncEvent; make it possible for a component to entirely change the class of its rendering's component

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/986463003

The AnimationGenerator didn't always generate the |end| value because of
floating point rounding. This CL causes it to always generate |end| at the end.

R=eseidel@chromium.org

Review URL: https://codereview.chromium.org/983893002

R=eseidel@chromium.org

Review URL: https://codereview.chromium.org/980043005

In order to make the Dart Analyzer stop complaining about
Event not having a default constructor (and all Event subclasses
not having an explicit constructor, thus having an implicit one
which calls the default Event() constructor), I made all of
Event()'s parameters named and thus optional, but did not update
our one sky test which used Event().

The real fix is probably to make the autogenerator smart enough
to have FooEvent() call super("foo"), but I was lazy.

This at least fixes the tests (and greens the waterfall) for now.

TBR=abarth@chromium.org
BUG=

Review URL: https://codereview.chromium.org/988573002

I also fixed all warnings. :)

This is the only error remaining:
[error] Native functions can only be declared in the SDK and code
that is loaded through native extensions

My understanding is that we need to do something similar to:
https://codereview.chromium.org/950063002/
in order to work around the 'native' issue.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/981733009

That's where it belongs.

R=eseidel@chromium.org

Review URL: https://codereview.chromium.org/979283002

This CL introduces a flag to control whether fn.dart prints the render duration
to the console. By default, the flag is off to avoid log spam.

Also, improve the way we intialize _isInCheckedMode to make use of the fact
that Dart intializes final fields lazily.

R=eseidel@chromium.org

Review URL: https://codereview.chromium.org/982073002

This just makes it easier to run with the correct flags.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/982093003

It's awkward to work on fn.dart in the examples directory so this CL moves it
to /sky/framework. Also, I've merged the whole library into one file instead of
using the |part| mechanism. The whole thing isn't that big.

R=eseidel@chromium.org

Review URL: https://codereview.chromium.org/987463002

These examples don't work anymore and have been replaced with
color-chooser.sky.

R=eseidel@chromium.org

Review URL: https://codereview.chromium.org/987443002

It's legal for the person embedding to supply null.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/979223003

This CL changes the duration of the drawer animation to match the values used
by the Android framework.

R=eseidel@chromium.org

Review URL: https://codereview.chromium.org/976193002

- Removed out-of-date README.md
- Moved fling-curve into the animation directory because it's part of the
  animation behavior of the system.
- Moved view-configuration into the theme directory because it's a collection
  of constants similar in flavor to the colors and the shadows. Eventually
  we'll want to make the theme configurable and have these all together will
  hopefully make that easier.
- Moved dom-serializer into tests/resources because it is used only by tests.

R=eseidel@chromium.org

Review URL: https://codereview.chromium.org/980423002

Instead, we can just use the existing animation/curves.dart file in the
framework.

R=eseidel@chromium.org

Review URL: https://codereview.chromium.org/976373003

This CL removes the hard-coded colors and shadows from the fn widgets and
replaces them with compile-time constants. The color values are from the
material spec:

http://www.google.com/design/spec/style/color.html#color-color-palette

R=eseidel@chromium.org

Review URL: https://codereview.chromium.org/983733003

Instead of duplicating fling-curve.dart in fn, we now share the existing copy
in sky/framework.

R=eseidel@chromium.org

Review URL: https://codereview.chromium.org/976363003

Previously, the two versions of this sample app had separate copies of the
stock data. This CL moves the common data to the common data directory so that
they can share. Also, I've switched the data files to be |dart| files rather
than |sky| files to make them easier to use from fn examples.

R=eseidel@chromium.org

Review URL: https://codereview.chromium.org/980953002

This CL removes a bunch of examples that don't actually work in the current
engine. I've also renamed example-element to custom-element and
example-scrollable to scrolling because the word "example" in the name is
redundant with the name of the directory.

R=eseidel@chromium.org

Review URL: https://codereview.chromium.org/980323003

This CL changes how events work in fn. Previously, event listeners were passed
in as constructor arguments. Now Nodes hold an |events| object, which contains
all the event registrations. When a Component renders, all its |events| are
copied onto the Node it produces. When an Element syncs, it walks its |events|
and adds them as event listeners on the underlying sky.Element.

The net result of this change is increased flexibility in how events are
registered. Now components don't need to enumerate all the possible events that
they support. Instead, the parent component can listen for whatever events it
likes.

Also, I've cleaned up the association between DrawerAnimation and Drawer. Now
the constructor for Drawer accepts an |animation| object and wires up its
internal event handlers itself instead of requiring the constructor to do all
the wiring.

R=rafaelw@chromium.org

Review URL: https://codereview.chromium.org/975863003

Specs: fix typos in style2.md, checkin forgotten builtins.md, add guard feature to runloop.md, rename WeakMap to MapOfWeakReferences, factor out Pair<>

Review URL: https://codereview.chromium.org/974313003

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/961873004

This CL adds license blocks and cleans up a number of Dart idioms in fn.
Specifically, I've marked several fields as |final| and used Map#putIfAbsent in
some appropriate places.

R=rafaelw@chromium.org

Review URL: https://codereview.chromium.org/973613004

R=rafaelw@chromium.org

Review URL: https://codereview.chromium.org/970393002

If there is jank, we might not get a frame time that's just after the last
frame, which means we'll stop generating animation frames before hitting 1.0
exactly.

In this CL, we introduce state to takeWhile to cancel the stream after emitting the
1.0.

R=rafaelw@chromium.org

Review URL: https://codereview.chromium.org/975153002

TBR=abarth

Review URL: https://codereview.chromium.org/975203002

TBR=raf

Review URL: https://codereview.chromium.org/974903005